Car-wheel.



W. B. FLOYD.

GAR WHEEL.

APPLiCATlON FILED IAN-24, 193- RENEWED JULY 22. 19!.54

1,252,895. Patented Jan. 8,1918.

2 SHEETSSHEET I- ]NVEN TOR.

A TTORNE Y.

W. B. FLOYD.

CAR WHEEL. APPLICVATION men 1pm.. 1913. nsnzwcn wLvzz. m5.

Patented Jan; 8 1918; I 2 suins'snin 2.

; sT TEs PATENT] OFFICE.

wines 12. m

or conmmos; on'ro, ssreaion T rim normn'r rnorn oomrm,

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can-wheel.

Specification of Letter: Intent. Patented J an. 8, 1918.

A lication ma nunet, 191:; Serial no. has. Renewed 1111 22, 1915. Serial m. 41,414.

Be it known that 1, War. 'a B. From; a citizen of theUnited St ates,"residi ng at C0- lumbus, in the county of Franklin and State of Ohio, have invented: certain new and use ful Improvements in Car-\Vheels,,of which the following is a specification, reference being had therein to the accompanying drawing; This invention relates to lmprovements 1n car wheels and in particular to that general class, known as mine car wheels in which the wheel itself is rotatahlY mountedupon' the end of an axle secured beneath a car. One {of the objects is to provide a cast steel wheel having the inner end of the hub so 'ft'rmed as to provide a housing for a roller bearing cageand likewisetakecare of the end thrust of the axle. Among other objects are improvements in the, lubricating system and in the car bearing whlchis used for holding the wheel initsj proper axial position.

' of .mv improved car' wheel showing it 'mounted upon the end of an axle, parts of ;armiim the'line Referring to the drawings,' l

Figure 1 is'a fragmentary side e l'eratio'n the hubbeing broken away to expose the bearing-and grease reservoir.

Fig.2 is an-end elevation. Fig.3 is'a partial rerticaltransverse'sec- 1-1 of Fig. 1. r

' Fig. 5 is a longitudinal vertical, sectional viewfon the line 3 .3 of Fig. 2; and Fig. (Sis ajlongitudmal vertical sectional. fviewltlirougl a car wheel embodying my intention in modified'form.

" The riu'merall n axle transversely. disposed beneatha car.

;In 'the drawings,-

'body and adapted to'- carry on. each of its ends a track wheel. The shaft is of the same. diameter throughout its length and Its ends a are, squared otf atright an les. A flanged fi'wlieelflhaving spoke'sB an a'hub 41ssupported upon an end'of the shaft- "1 by me ns,-

Figs. 1 to 5', of a'doubleset 'of'roller bear 5-'5. The roller bearingsare conapproximately equi-distanh trornfltl at sawa Sta e a was p transverse yertical' sectional 4 viewlon the line 2+2 of Fig. 1.

dicates' a round shaft or fl g jih ql i t ti ely new n]; n

' 7 contacts with the'rail. The exterior portion of the hub is of somewhat tubular shape extending outward beyond the space within which the rollers are contained and is rounded'ofi at its other end to form a grease reservoir 8. Access to this reservoiris had by removing a screw plug Qtlireaded into the end of the hub. A short distance from the inner end the hub is flanged out to provide a ring 10 to retain the hub in its proper axial osition; A car bearing 11 is secured by bo ts 12 to theho-ttom of the car and is open through its bottom section for the reception-of the axle. Two bolts 13.'13 ex-.

tend through thelower portions oi the car bearing directlybelow the axlefso as't'o pre-- vent-any accidental d splacement of the bearing upon the axle. The outer endro'f the car,;bearing is extended overthe flange 10 and grooved out at 14 to provide a hood or chalnber'within which; the flange 10 rotates.

'IP-he bottom of thelioodfisopen to allow dropped down integral with the wheel hub near itsouter end. -Th s ring has'an'inner shoulder 10-50 positioned as to take end thrust. of the roller bearing cage 6. a At the inner edge .17 of the shoulder 16 the flange is ofsuch a diameter as'to make a comparatively close fit with the axle 1. Bvond the end of the/axle the ring extends still farther toward the hub' axis providing an outer shoulder -18 against -which the end of the axle is free to contact.

This shoulder extends a slight distance to ward the axis of thefhubrleaving anaxial opening eryoir 8. p p v r,

It. has been common practice to provide collars upon the axles for the purpose ofaxially p'ositioning the car wheel. these were employed, axles were I u-suallgg madeof'sqnare strckand'theendsor beat in'g seats turning around. as far back as the collars. Squarestock ofthis kind .is more expensive than cold rolledroundStockJsuch?" communicating with the grease res asround shafting, to which ihust be added the cost-of lathi-ng the; ends for the bearing i seats andshrinking on or otherwise afiixing the axle collars at eaehendv Applicant has eliminated the necessity of using 'the'1 no re xp ensive 1'squarestock as wellas the expene process ofj m'aehining; h! doin away the wheel itself means for reventing the side shift of a round axle; he thrust ring or shoulder-against which the end of the axle abuts is cast integral with the hub and forms a double shoulder the outer shoulder serving as a. stop 'for the axle whereas the inner (axially arran ed) shoulder serves to hold in place the ro ler bearin cage. Between the two shoulders the ring 18 bored out to receive the end of the shaftand is of such-a diameter as to make a comparatively close fit. This is for the purpose of restricting the passage of grease from the reservoir in the outer end of the hub to the roller bearings.

It will be seen that the inner surfaceof the chamber in which are mounted the roller bearin s 5 is a plain cylindrical surface from t e shoulder 16 to the inner end of the hub. interpose between a hollow hub having some of the characteristics of the hub herein illustrated and described and the axle on which the wheel; is mounted, a single set of roller bearin that are comparativel long, they being 1n practice in the neig borhood of five inches each in length; 'It has been found that the rollers of bearings of this kind sometimes become. twisted or. bent,

owing to their ,length which, vas-Will be understood, immediately destroys or seriously. i

impairs their usefulness as friction reducing bearings. It is also found that such long roller bearin nearly always wear unevenly and the rol ers gradually assume a shape approximating t at of a cigar, that is to a ,sa one end portion,'the inner-, of-each ro ler wears away more rapidly than the other portions thereof the resu t of which is that as soon.as this occurs to any appreciable extent the wheel be insi to W'a'bble'or rock, and this tendencyi allowed to coiis tinueincreases indegree until the wheel is destroyed or injured. s The reasonforthis uneven wearingis that the greater part of y the :load'is borneby those portions (if the roller 'bearin that are vertically above the .t eatl i'line o the wheel and from this line inward; Hence these. parts-are sub ect to the greatest WearQ-YIhis tendency to'uneven wear of the rollerbearlngs is especially ap- .i parentfin. the wheels o f;carsfuse'd in m nes v ,where-frequent and sharp c'u'r-v'es are en- .count-ered, th e greatest strains and wear upon" the-bearings being developed in the v passing of curves.

rawings', the rollersv ofveach set being comparatively short, the unequnl wear in the bearings is large-lyrreducedahd is 'so' distributed .as to be largely negligible in itseflect upon.

the runningiwheel, for even if the inner ends of each setof rollers should wearfaster than the outer ends of such rollers, the wheel;

'result that the wheel is supported so" that it It has heretofore been customary to 'open passage throu hth'e bottom, the axle I have discovered that, by making'the hearings in two sets, "assho'w'n' .in the weasel:

would nevertheless have two sets f beafl ings, each but relatively little wornf' nd sep arated some considerable distance from each other,in engagement with the axle,'with the will not rock. -'If either set of bearings becomes so worn or defective as to require its being replaced this can be easily done, since the wheel as a whole is readily removable from the axle and both sets of rollers are oh chamber, as has been stated, are of a plain cylindrical shape permitting the ready insertion and removal of both sete of bearings through the open inner end ofthe hub.

Fi 6 illustrates a modified form of car whee in which the cast steel wheel is carried upon a bronze bushing 20 between the axle 1 and the hub 4. A flange 10 is provided upon this hub as in the previous] described one for engagement with the car bearing 11, In this typeof hub a lubricant reservoir 21 is provided'in the form of an annular chamber extendingaround the h'ub-atwapproximately its axial center. Openings 22 hub in such a way as to providea shoulder 18 to serve as an abutment for the -.end of the aide, and an inner shoulder 16 for retaining the bushing in place and constitutes a'partition separating the bearing chamber from the'grease chamber of the hub, the

partition being a-xially perforated to afiord "communcation between such chambers. The

end of-the hub is provided-.w ithfa grease reservoir8 throu h which the lubricant is free to ass inwar to'the bushing.

r y :having 'the' bearings 11 each drical' interior bearing surface and with an and its wheels jean eseparated readily at any time from the car. ,And. as the lower part oi the metal ofeach box extends'd'own ward on eachside of the, axle, asshow n in 11151 side view in Fig. 1 and in end viewin Fi' 2 and 4, it permits the free movement of t e axle. vertically and ondi'nes transverse to its axis out from the bearing box, or backfinto' it. The chamber at 14 for the-retainingl"120 flange 1f) 'iscorrespondlngly curved'at its. upper end, but has straight vertical entrance assag'es extendin, 1= downward from the orizontal planet; the axis-of the axle, as j j shown in Figs, 2Y-and. 4, so that the retaininglfi flange can -.reai(tly enter or'escnpe from the .flikaniiber 14'when the car body is loweredo r =1 te i What Iclaiin is:---

1 The combination with s wheel hub- 3' a mounted in a single bearin chamberof theiii -wheel hub, the Walls of'w as I formedwith an upper approximatelysemi-cylinadapted to rotate 'upon a shaft, of an annular bearing interposed between the hub and the shaft, and a ring extending within the outer end of the hub and providing an atmtment for both the outer end of the bearing and end of theshaft.

2. The combination with a wheel hub adapted to rotate upon a shaft, of an annu? v lar; bearing interposed between the shaft and hub, the end of the hub being closed and ring extending inward within the hub and dividing off a lubricant chamber between its walls and the end wall of the hub, and likewise providing an abutment for the end of the shaft.

3. The combination with a wheel hub adapted to rotate upon a shaft, of an annular ,bearin interposed between the shaft and the hu the outer endof the hub being inclosecl and providing a, lubricant chamber, an annular ring extending inward within the hub and closely fitting the periphery of the end of the shaft outside of the bearing, and a lip extending inward from the said firing to provide an abutment for the end of the shaft. a

4. In a wheel mounting for mine cars, the combination of the car body, the bearing box, the wheel having cast integrally together a tread a flange which determines the tread line on the track and a' hub elongated axially inward and outward and formed with a radially expanded chamber elongated to extend-across the plane of the Lead line and across the longitudinal vertical planes tively loosely in the bearing box and movable axially therethrough, two independent sets of anti-friction rollers both positioned in and; lbngitudinally removable from the end of said chamber, all the rollersof each being in the same transverse planes, and those of one set being outside and those of the other set being inside of the vertical of the box metal, the axle mounted rotaplane of the tread line of the wheel, and means for separa bly holding the wheel properly laterally relatively to the bOX.

5. In a wheel mounting for mine cars, the combination of the body, the box secured thereto and provided with a laterally acting wheel retainer,/the wheel having cast integrally together a tread a flange arranged to determine the normal tread line of 'the wheel and a hub, said hub being elongated axially inward and outward and formed with an axially acting wheel retainer engaging'the retainer aforesaid and also with two chambers one being a lubricant chamber and the other being an axle journal chamber with an axle abutment rigid with the hub, the axle mounted rotatively in and longitudinally movable through the box, and 'two sets ofindependent anti-friction rollers in the said journal chamber around the axle in the said chamber both removable through the same end of the hub, the inner ends of all of the rollers being held closely adjacent to the vertical longitudinal plane of the tread line of the wheel.

6. The combination of an axle, a, wheel supported thereon having a. hollow hub in which is formed a bearing chamber open at its inner end, and a grease chamber at its outer end, these chambers being separated by a partition, perforated axially whereby they communicate, this partition servin as an abutment for the end of the axle, w ich is seated in a recess formed therefor in which it fits comparatively closely, andfric tion reducing bearings located in the bearing chamber of the hub and interposed between the wheel hub and the axle.

In testimony whereof I afi'lx my signature,

in presence of two witnesses.

,\ a WALTER B. FLOYD. Witnesses: a

CHARLES W. Cox, HARRY E. WEST. 

